US4436644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjuncts for use in the manufacture of detergent powders
Assignee: Lever Brothers Co
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Filing: 1982-01-11
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Granted: 1984-03-13
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Expires: 2002-01-11
Abstract
Abstract A process for producing absorbent granules from sodium tripolyphosphate or disodium hydrogen orthophosphate by simultaneously granulating and hydrating the salts to full hydration. The process produces granules which have good absorbency without the need for a drying step. The granules can be used for absorbing liquid nonionic surfactant or other liquid components of detergent powders such as perfumes.
Inventors
- 👤 Richard S. Johnson
- 👤 John K. Potter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:15
CPC Classifications
C; C11; C11D; C11D1/00; C11D1/66; C11D3/00; C11D3/02; C11D3/04; C11D3/06; C11D3/062; C11D3/50; C11D3/502; C11D3/505
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
49 words
An adjunct for the use in the manufacture of a detergent powder comprising a liquid nonionic surfactant absorbed on granulated, substantially fully hydrated sodium tripolyphosphate or sodium dihydrogen orthophosphate wherein the amount of nonionic surfactant absorbed on the sodium tripolyphosphate or sodium dihydrogen orthophosphate is at least 0.85 cc/g.
Claim 2
Dependent Claim
49 words
An adjunct for the use in the manufacture of a detergent powder comprising a liquid nonionic surfactant absorbed on granulated, substantially fully hydrated sodium tripolyphosphate or sodium dihydrogen orthophosphate wherein the amount of nonionic surfactant absorbed on the sodium tripolyphosphate or sodium dihydrogen orthophosphate is at least 0.85 cc/g.
Claim 3
Dependent Claim
50 words
An adjunct for the use in the manufacture of a detergent powder comprising a liquid nonionic surfactant absorbed on granulated, substantially fully hydrated sodium tripolyphosphate or sodium dihydrogen orthophosphate wherein the amount of nonionic surfactant absorbed on the sodium tripolyphosphate or sodium dihydrogen orthophosphate is at least about 1.0 cc/g.
Claim 4
Dependent Claim
50 words
An adjunct for the use in the manufacture of a detergent powder comprising a liquid nonionic surfactant absorbed on granulated, substantially fully hydrated sodium tripolyphosphate or sodium dihydrogen orthophosphate wherein the amount of nonionic surfactant absorbed on the sodium tripolyphosphate or sodium dihydrogen orthophosphate is at least about 1.0 cc/g.
Claim 5
Dependent Claim
12 words
An adjunct according to claim 1 or 2 further comprising a perfume.
Claim 6
Dependent Claim
26 words
An adjunct according to claim 1 or 2 wherein the adjunct is in the form of granules having an average diameter of 0.3 to 0.5 mm.
Claim 7
Dependent Claim
114 words
An adjunct for the use in the manufacture of a detergent powder comprising a liquid nonionic surfactant absorbed on granulated, substantially fully hydrated sodium tripolyphosphate or sodium dihydrogen orthophosphate wherein the amount of nonionic surfactant absorbed on the sodium tripolyphosphate or sodium dihydrogen orthophosphate is at least 0.85 cc/g which is prepared by a process which comprises the steps of: (a) simultaneously granulating and hydrating sodium tripolyphosphate or disodium hydrogen orthophosphate to full hydration; and (b) subsequently adding the liquid nonionic surfactant to the granules formed thereby without carrying out an intermediate drying step to thereby promote absorption by the sodium tripolyphosphate or disodium hydrogen orthophosphate of significantly larger quantities of liquid nonionic surfactant.
Claim 8
Dependent Claim
114 words
An adjunct for the use in the manufacture of a detergent powder comprising a liquid nonionic surfactant absorbed on granulated, substantially fully hydrated sodium tripolyphosphate or sodium dihydrogen orthophosphate wherein the amount of nonionic surfactant absorbed on the sodium tripolyphosphate or sodium dihydrogen orthophosphate is at least 0.85 cc/g which is prepared by a process which comprises the steps of: (a) simultaneously granulating and hydrating sodium tripolyphosphate or disodium hydrogen orthophosphate to full hydration; and (b) subsequently adding the liquid nonionic surfactant to the granules formed thereby without carrying out an intermediate drying step to thereby promote absorption by the sodium tripolyphosphate or disodium hydrogen orthophosphate of significantly larger quantities of liquid nonionic surfactant.
Claim 9
Dependent Claim
10 words
An adjunct according to claim 5 further comprising a perfume.
Claim 10
Dependent Claim
24 words
An adjunct according to claim 5 wherein the adjunct is in the form of granules having an average diameter of 0.3 to 0.5 mm.
Claim 11
Dependent Claim
115 words
An adjunct for the use in the manufacture of a detergent powder comprising a liquid nonionic surfactant absorbed on granulated, substantially fully hydrated sodium tripolyphosphate or sodium dihydrogen orthophosphate wherein the amount of nonionic surfactant absorbed on the sodium tripolyphosphate or sodium dihydrogen orthophosphate is at least about 1.0 cc/g which is prepared by a process which comprises the steps of: (a) simultaneously granulating and hydrating sodium tripolyphosphate or disodium hydrogen orthophosphate to full hydration; and (b) subsequently adding the liquid nonionic surfactant to the granules formed thereby without carrying out an intermediate drying step to thereby promote absorption by the sodium tripolyphosphate or disodium hydrogen orthophosphate of significantly larger quantities of liquid nonionic surfactant.
Claim 12
Dependent Claim
115 words
An adjunct for the use in the manufacture of a detergent powder comprising a liquid nonionic surfactant absorbed on granulated, substantially fully hydrated sodium tripolyphosphate or sodium dihydrogen orthophosphate wherein the amount of nonionic surfactant absorbed on the sodium tripolyphosphate or sodium dihydrogen orthophosphate is at least about 1.0 cc/g which is prepared by a process which comprises the steps of: (a) simultaneously granulating and hydrating sodium tripolyphosphate or disodium hydrogen orthophosphate to full hydration; and (b) subsequently adding the liquid nonionic surfactant to the granules formed thereby without carrying out an intermediate drying step to thereby promote absorption by the sodium tripolyphosphate or disodium hydrogen orthophosphate of significantly larger quantities of liquid nonionic surfactant.
Claim 13
Dependent Claim
10 words
An adjunct according to claim 8 further comprising a perfume.
Claim 14
Dependent Claim
24 words
An adjunct according to claim 8 wherein the adjunct is in the form of granules having an average diameter of 0.3 to 0.5 mm.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-03-13 | 1987-09-12 | 1988-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-13 | 1991-09-12 | 1992-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-13 | 1995-09-12 | 1996-03-13 | $7700.00 | Window Closed / Lapsed |